Devices to Extend Your Senses
Because the senses are limited, humans build devices to extend them — to see the very small or very distant, to hear the faint, and to detect things we cannot perceive at all.
Questions you may have include:
- How do devices extend the senses?
- What are some examples?
- Can they reveal the imperceptible?
Extending sight
Eyeglasses correct vision, while microscopes reveal the very small and telescopes bring the very distant into view. Cameras capture and preserve images, and night-vision and infrared devices let us see in conditions our eyes cannot handle.
Extending hearing
Hearing aids amplify sound for those who need it, and microphones and amplifiers let us capture, strengthen, and record sounds that would otherwise be too faint or fleeting.
Detecting the imperceptible
Many instruments detect what no human sense can: ultraviolet and infrared light, radiation, ultrasonic sound, and magnetic fields. By converting these into something we can see or hear, devices vastly widen our window on reality.
Summary
Devices extend the senses beyond their natural limits — glasses, microscopes, telescopes, and cameras for sight; hearing aids, microphones, and amplifiers for sound; and instruments that reveal otherwise imperceptible things like infrared light or radiation — greatly broadening what we can perceive.